San Luis Obispo California Climate Data

Monthly Average Climate Data for San Luis Obispo California

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January5.9 °C17.9 °C109.47 mm
February6.3 °C18 °C114.05 mm
March7.2 °C18.8 °C87.63 mm
April7.7 °C19.3 °C29.46 mm
May9.2 °C20.6 °C12.19 mm
June10.7 °C22.4 °C3.05 mm
July12.2 °C23.9 °C1.78 mm
August12.4 °C24.6 °C0.25 mm
September11.8 °C24.8 °C2.54 mm
October10.4 °C23.9 °C18.03 mm
November7.7 °C20.8 °C45.21 mm
December5.3 °C17.7 °C83.82 mm
Annual8.9 °C21.1 °C507.48 mm

Climate Data for San Luis Obispo California

Average First Frost DateDec. 21 - Dec. 31
Average Last Frost DateFeb. 11 - Feb. 20
Average Days With Frost5-10 Days
Plant Hardiness Zone - 2023Zone 10a : -1.1°C to 1.7°C
Plant Hardiness Zone - 2012Zone 9b : -3.9°C to -1.1°C
Current Drought ConditionsNormal
Köppen Climate ClassificationCsb - Warm-Summer Mediterranean Climate
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